Refurbished Sundown Audio E v.4 12" Subwoofer B-Stock

Save $45.00
Sundown AudioSKU: R-EV412-D2-B

Sale price$145.00 Regular price$190.00
In stock


The fourth version of Sundown Audio’s acclaimed E series has been refreshed for 2020. The v.4 update is a minor refresh from the v.3 featuring a new custom-tooled, stronger stamped steel frame and a upgrade to the directional forced-air cooling spacer.

Sparked Innovations is a Certified Sundown Audio Recone Specialist. All rebuilt woofers come with a 90-day warranty from Sparked Innovations that covers workmanship. Since a subwoofer should never blow if operated within the manufacturer’s specifications, the only reason it would fail is if we did something wrong in the recone process.

NOTE: B-stock refurbs will have cosmetic scratches, scuffs, or even gouges in the metal of the basket or on the magnet. None of this will affect performance.


  • Xmax = 14mm one-way by 70% BL
  • RMS Power = 500-watts (300-watts 8”)
  • Vented magnetic gap
  • Vented pole piece with optimized geometry (solid pole for 8”)
  • Black Aluminum 2.5” voice coil former for superior heat dissipation (2” coil for 8”)
  • High Temperature 4-Layer copper voice coil wire
  • Spring Loaded Terminals
  • Stitched-On “Mini-XL” Tinsel Leads to prevent fatigue and failure
  • Bolted-on Spider Pack
  • Bolt-through motor design to ensure maximum longevity and ruggedness against mechanical failures
  • High strength stamped steel frame
  • Optimized for ported enclosures
T/S Specs E v.4 12" D2 E v.4 12" D4
RE (Ohms) 4.030 6.130
FS (Hz) 28.480 28.373
VAS (L) 53.059 54.292
Qes 0.509 0.570
Qms 5.249 3.542
Qts 0.464 0.491
BL (NA) 17.576 20.249
Mms (Grams) 217.987 213.033
Cms (mm/N) 143.258 146.589
Sens (dB @ 1w/1m) 85.7 85.3

Enclosure Specifications

  E-10 v.4 E-12 v.4 E-15 v.4
Sealed Enclosure N/A N/A N/A
Ported Enclosure 1.0 cu ft 1.75 cu ft 3.0 cu ft
Recommended Tuning 35hz 35hz 35hz
Recommended Port Area 15 sq in 26 sq in 44 sq in
Displacement 0.11 cu ft 0.12 cu ft 0.14 cu ft
Depth 5.625" 6.50" 7.25"
Outside Diam. 10.000" 12.250" 15.125"
Cutout 8.875" 11.125" 13.875"
Physical Dimensions

Enclosure Design:


Product Brand Sundown Audio
Coil D2 Ohm,   D4 Ohm  
RMS Power 500W  
Diameter 12"  

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